@media screen and (max-width:750px){.demo-main[data-v-530f335e]{width:90%}.navBg[data-v-530f335e]{height:0!important}.knowledge-item p[data-v-530f335e]:nth-child(2){line-height:1.5!important}.banner[data-v-530f335e]{margin:0 auto;width:90%!important;height:auto!important}.banner img[data-v-530f335e]{-o-object-fit:contain;object-fit:contain}}.nbar[data-v-530f335e]{margin-bottom:1rem;font-weight:700}.navBg[data-v-530f335e]{width:100%;height:5.104vw;background:#fff;z-index:0}.index-main[data-v-530f335e]{overflow:hidden}.index-main .banner[data-v-530f335e]{margin:0 auto 1.563vw;width:62.083vw;height:16.979vw}.index-main .banner img[data-v-530f335e]{width:100%;height:100%;-o-object-fit:contain;object-fit:contain}.index-main .knowledge-item[data-v-530f335e]:last-child{margin-bottom:11.25vw}.index-main .knowledge-item p[data-v-530f335e]:first-child{font-size:1.146vw;margin-top:1.354vw;margin-bottom:1.354vw;color:#333}.index-main .knowledge-item p[data-v-530f335e]:nth-child(2){font-size:.729vw;color:#999;line-height:1.406vw}